[1]Heterocycles,1992,vol.33,#2,p.775-790
[2]Heterocycles,1992,vol.33,#2,p.775-790
[1]Heterocycles,1992,vol.33,#2,p.775-790
[1]ChemicalandPharmaceuticalBulletin,1985,vol.33,#8,p.3113-3121
[1],1957,p.39,41
[1]ChemicalandPharmaceuticalBulletin,1985,vol.33,p.3113-3121
[1]Heterocycles,1992,vol.33,p.775-790
[2]Heterocycles,1992,vol.33,p.775-790
[1]Heterocycles,1992,vol.33,p.775-790
[1]ChemicalandPharmaceuticalBulletin,1985,vol.33,p.3113-3121